Television receiver arrangements

Claim 1

In a television receiver adapted to receive television signals comprising digitally coded data pulses representing teletext information transmitted during television lines in which picture signals representing normal picture information are not present, such television receiver comprising: acquisition means for acquiring such digitally encoded teletext information, memory means for storing the acquired digital codes, character generator means having a memory in which is stored character information identifying each of the character shapes which the television receiver can display, and a display facility for displaying respective pages of the teletext information; the improvement characterized in that: said character memory is adapted to store said character information in the form of a common language set of characters together with a plurality of sets of national option characters, any one of such national option character sets being selectively addressable by control bits contained in the received teletext information to form with the common language set a complete language set for displaying a page of the received teletext information in a single language; said television receiver arrangement further comprising logic processing means responsive to said control bits to address the national option character set in said character memory signified by such control bits; such logic processing means being further adapted to address all of the national option character sets in said character memory, so that more than one of the national option character sets can be used in the display of a single page of the teletext information.